Zobrazeno 1 - 10 of 19 pro vyhledávání: '"I. G. Shandra"'
1
Tax and foreign exchange factors of inequality (To posing a problem)
Autor: A. S. Tanasova, E. Y. Sokolova, I. G. Shandra, A. V. Chigireva
Publikováno v: Voprosy Ekonomiki. :146-159
The high level of income inequality of the population is a long-term problem in the world. The pandemic of 2020 and the growth of geopolitical tensions in 2022 increase the urgency of finding its solution. Inequality is a multifaceted phenomenon dete
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::87fba007b9307a7130bd42cd2072865f
https://doi.org/10.32609/0042-8736-2023-1-146-159
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2
On higher-order Codazzi tensors on complete Riemannian manifolds
Autor: Sergey Stepanov, Josef Mikeš, I. G. Shandra
Publikováno v: Annals of Global Analysis and Geometry. 56:429-442
We prove several Liouville-type nonexistence theorems for higher-order Codazzi tensors and classical Codazzi tensors on complete and compact Riemannian manifolds, in particular. These results will be obtained by using theorems of the connections betw
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::2d38c908904e5076ff0d173d475c8325
https://doi.org/10.1007/s10455-019-09673-w
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4
Harmonic and Projective Diffeomorphisms
Autor: Sergey Stepanov, I. G. Shandra, Josef Mikeš
Publikováno v: Journal of Mathematical Sciences. 207:658-668
This article is devoted to a review of the results of the local and global geometries of harmonic and projective diffeomorphisms of Riemannian manifolds.
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::dd80c2d976b3d560e1bb6f92019dcad7
https://doi.org/10.1007/s10958-015-2388-3
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5
New characteristics of infinitesimal isometry and Ricci solitons
Autor: I. G. Shandra, Sergey Stepanov
Publikováno v: Mathematical Notes. 92:422-425
We prove that a vector field X on a compact Riemannian manifold (M, g) with Levi-Civita connection ∇ is an infinitesimal isometry if and only if it satisfies the system of differential equations: traceg(LX∇) = 0, traceg(LX Ric) = 0, where LX is t
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::95a560582a99f3d6f109acb459b11cba
https://doi.org/10.1134/s0001434612090155
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7
Regularity and Tresse's theorem for geometric structures
Autor: I. G. Shandra, R. A. Sarkisyan
Publikováno v: Izvestiya: Mathematics. 72:345-382
For any non-special bundle of geometric structures we prove that the -jet space of this bundle with an appropriate contains an open dense domain on which Tresse's theorem holds. For every we prove that the pre-image of under the natural projection co
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d99e65857b714646d215258e4499cab0
https://doi.org/10.1070/im2008v072n02abeh002404
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